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2430 - zebra
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== Rezolvare == <syntaxhighlight lang="python"> def validate_input(sir): if len(sir) > 200000: print("Inputul depășește limita de 200.000 de caractere.") return False return True def gaseste_subsiruri_zebra(sir): n = len(sir) subSiruri = [] i = 0 while i < n: # Găsirea primei zi rele while i < n and sir[i] == '1': i += 1 if i == n: break # Am ajuns la finalul șirului, nu mai avem subșiruri zebră start = i ziua_curenta = 0 while i < n and sir[i] == '0': ziua_curenta += 1 i += 1 if i == n: break # Am ajuns la finalul șirului, ultima zi a fost bună # Verificăm dacă următoarea zi este rea if i < n and sir[i] == '1': subSiruri.append((ziua_curenta, start + 1, i)) if not subSiruri: return -1 return subSiruri # Citirea datelor de intrare sir = input().strip() # Găsirea subșirurilor zebră rezultat = gaseste_subsiruri_zebra(sir) # Afișarea rezultatelor if rezultat == -1: print(-1) else: print(len(rezultat)) for subSir in rezultat: print(*subSir) </syntaxhighlight>
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